Introduction to Classical Mechanics · Problem 11.5
Relativity (Kinematics) — Morin
Physics — Mechanics · rotated-square
Problem
A square with side L flies past you at speed v, in a direction parallel to two of its sides. You stand in the plane of the square. When you see the square at its nearest point to you, show that it looks to you like it is rotated, instead of contracted. (Assume that L is small compared with the distance between you and the square.)